Auto-cutter driver circuit
Rotating the DC motor counterclockwise or clockwise causes the auto-cutter to execute a full cut
or a partial cut (one point left uncut). The driver IC (U6) has a full-bridge configuration and
controls motor rotation, clockwise and counterclockwise.
The position of the auto-cutter blade is detected by the signal connected to P67 of the CPU.
Figure 2-28 Auto-cutter drive circuit
1
2
3
CN9
4
AC M1
AC M2
GND
AC RES
Auto-cutter
1
2
C21
+5V
R35
R34
IN1
IN2
U6
+24V
R57
R58
VM
OUTA
OUTA
GND
P100
P101
3
4
1
2
TA8428K
7
3
5
4
GND
1
2
3
4
GND
P67
C20
BLOCK (1)
U5
— 52 —
Содержание UP-250
Страница 1: ...EXTERNAL PRINTER FEB 2000 MODEL UP 250 without price TECHNICAL MANUAL ...
Страница 95: ... 86 END END Yes No Action 4 Replace main PCB Replace printer OK Action 4 mechanism assembly ...
Страница 136: ... 127 ...
Страница 149: ... 140 Main Circuit Board Parts Layout ...
Страница 150: ... 141 RS 232 Serial Interface Circuit Board Parts Layout ...
Страница 151: ... 142 IEEE 1284 Parallel Interface Circuit Board Parts Layout ...
Страница 152: ...RS 485 Serial Interface Circuit Board Parts Layout 143 ...
Страница 159: ... 150 Printer Mechanism Unit Lubrication Points Diagram 1 O 10 2 G 31 6 G 31 7 G 31 5 G 31 7 G 31 8 G 31 ...
Страница 160: ... 151 Case Unit Lubrication Points Diagram 4 G 31 4 G 31 3 G 31 3 G 31 ...
Страница 163: ... 154 EXPLODED DIAGRAM FOR TM U200B U210B NO 1 ...
Страница 164: ... 155 EXPLODED DIAGRAM FOR TM U200B U200PB U210B U210PB NO 2 ...